A guest-assisted molecular-organization approach for >17% efficiency organic solar cells using environmentally friendly solventsShow others and affiliations
2021 (English)In: Nature Energy, E-ISSN 2058-7546, Vol. 6, no 11, p. 1045-1053Article in journal (Refereed) Published
Abstract [en]
The power conversion efficiencies (PCEs) of laboratory-sized organic solar cells (OSCs), usually processed from low-boiling-point and toxic solvents, have reached high values of over 18%. However, there is usually a notable drop of the PCEs when green solvents are used, limiting practical development of OSCs. Herein, we obtain certificated PCEs over 17% in OSCs processed from a green solvent paraxylene (PX) by a guest-assisted assembly strategy, where a third component (guest) is employed to manipulate the molecular interaction of the binary blend. In addition, the high-boiling-point green solvent PX also enables us to deposit a uniform large-area module (36 cm(2)) with a high efficiency of over 14%. The strong molecular interaction between the host and guest molecules also enhances the operational stability of the devices. Our guest-assisted assembly strategy provides a unique approach to develop large-area and high-efficiency OSCs processed from green solvents, paving the way for industrial development of OSCs. Organic solar cells processed from green solvents are easier to implement in manufacturing yet their efficiency is low. Chen et al. devise a guest molecule to improve the molecular packing, enabling devices with over 17% efficiency.
Place, publisher, year, edition, pages
NATURE PORTFOLIO , 2021. Vol. 6, no 11, p. 1045-1053
National Category
Reliability and Maintenance
Identifiers
URN: urn:nbn:se:liu:diva-181055DOI: 10.1038/s41560-021-00923-5ISI: 000713552900001OAI: oai:DiVA.org:liu-181055DiVA, id: diva2:1612383
Note
Funding Agencies|National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [51922074, 22075194, 51673138, 51820105003]; National Key Research and Development Program of China [2020YFB1506400]; Natural Science Foundation of the Jiangsu Higher Education Institutions of ChinaNational Natural Science Foundation of China (NSFC) [20KJA430010]; Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD); Collaborative Innovation Center of Suzhou Nano Science and Technology; Postgraduate Research and Practice Innovation Program of Jiangsu Province [KYCX21_2939]; Czech Science FoundationGrant Agency of the Czech Republic [GA18-12925S]; Swedish Energy Agency EnergimyndighetenSwedish Energy Agency [48382-1, 52474-1]; Swedish Research Council VRSwedish Research Council [2016-06146, 2018-05484, 2018-06048]; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University [2009-00971]; Swedish Research Council FORMASSwedish Research CouncilSwedish Research Council Formas [2019-01071]; Aforsk and Olle Engkvists Stiftelse [196-0134]; Stiftelsen for Strategisk Forskning through a Future Research Leader programme [FFL18-0322]; Tang Scholar
2021-11-182021-11-182024-01-10